#-*-coding:utf-8-*-
__author__ = 'toriycn'
import json
import urllib
import urllib.request
import re
from json import *

json  = "{ \"default_sort_key\" : \"date\", \"notification_ids\" : [], \"external_id\" : \"10\", \"_id\" : \"10\", \"username\"" \
        " : \"ssss\" }{ \"default_sort_key\" : \"date\", \"notification_ids\" : [], \"external_id\" : \"100\", \"_id\" : \"100\"," \
        " \"username\" : \"459139835glq4\" }"
print(json)

matches = re.findall(r"[\"\w\s \"]+:[\"\w\s \"]+",json,re.S)
for i in matches:
    print (i)